Ring-mold.



(No Modal.)

my A lirricn',

UNITED @raras Amami WILLIAM H. FORD, OF LOWELL, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO OYRUS W. RUSSELL, OF SAME PLACE.

RING-MOLD.

SPECIFICATION forming part of Letters Patent No. 662,562, dated November 27, 1900.

Application tiled February 26, 1900. Serial No. 6,491. (No model.)

To all whom t may concern: Y abutting the face of the body-section left by Be it known that I, WILLIAM H. FORD, a the cut as a chord. The mold-sections have citizen of the United States,residing at Lowell, suitable openings or runways by which molcounty of Middlesex, State of Massachusetts, ten met-al may be poured into the mold-space. 5 5 5 .have invented an Improvement in Ring- The mold may be formed from any suitable Molds, of which the following description, in material, preferably charcoal.

connection with the accompanying drawings, The chambers in the mold material are prefis aspecification, like characters on the drawerably of variable depths, they being deepings representing like parts. est adjacent the crown-mold space that the 6o 1o This invention relates to molds; and the ring may be made broader and heavier at the object of the invention is to provide an impart which is to join the part of the ring toreproved device of this character especially ceive a jewel. The chambers may be formed adapted for casting finger-rings with crowns in any convenient manner-say, by cutting or enlargements adapted to receive jewels of annular grooves or channels in the adjacent 65 15 various kinds. faces of the mold material, leaving preferably The invention is shown in two of its simple a central core integral with each body-mold embodiments in the accompanying drawings, section. wherein- In Fig. 1, M represents a piece of mold ma- Figure 1 is a face view of a piece of mateterial, preferably charcoal, having a smooth 7o 2o rial to constitute one of the main or body face a, provided with a groove 12, shown as mold sections, it having a groove forming annular, the production, as herein shown, of part of a mold-space in which the molten said groove leaving a cylindrical projection metal to form the ring is to be'poured. Fig. 13, forming one-half of a core, a substantially 2 shows a transverse section in the line 2 2, similar core and groove, made in a like piece 75 z5 Fig. 1, of two pieces, such as represented in of mold material M,forming, when said pieces Fig. 1, but face to face and pinned in such are put together, a mold, one groove registerrelation. Fig. 3 is a sectional View showing ing with another to form a mold-space. The two pieces of mold material, such as shown groove in the mold material M is denoted by in Fig. 1, out in the line 3 3, Fig. 1. Fig. 4 12 and the core part by 13. Upon an in- 8o 3o is a face view of a crown-mold section. Fig. spection of Fig. 2 it will be seen that the 5 is a View of one ofthe main or body secgrooves 12 and 12', as well as the core-sections tions with the crown-mold section represented 13 and 13', register. in Fig. 4 cut in the line y y and fitted there- To keep the mold-sections together du ring against. Fig. 6 is a view corresponding to the casting operationl may pass acentering- 85 35 Fig. 5,but showing adifferent type of crownpin, as 14, through centrally-bored holes, as mold section; and Figs. 7 and 8 are perspec- 15 and l5', formed in the respective parts of tive views of rings cast in the two forms of the mold. mold. The meeting faces of the body-mold sec- The improved mold in the present case comtions M and M are made flat by suitable 9o 4o prises a plurality of body-sections disposed means before the holes 15 and l5' or the face to face, each having a parti-annular grooves 12 and l2 are made therein. chamber, the chambers registering to form a In Fig. 2 it will be seen that the registering mold-space, each chamber beingcut away on a grooves 13 and 13 vary in depth, the depth line making a chord to said chamber, to thereof the groove at its shallowest part being one- 95 45 by exposeap'art of each chamber, each chamhalf the width of the ring at its narrowest ber containing a core, one side of which conpart, the depth of the groove increasing from stitutes one wall of the mold-chamber and that point more or less according to the Width defines the internal diameter of the ring, and of that part of the ring to contain the jewela crown-mold section having a crown-mold seat. Ioo

5o space in communication with the body-mold Each mold-section M and M has a suit-able space, the face of the crown-mold section runway 17, which put together form a pouring-openin g communicating with the grooves l2 and l2', as shown in Fig. 2. The molten metal is turned into the pouring-opening and flows into the mold-space and also into the crown-mold space, as will hereinafter appear. When the two parts of the mold material are centered, as represented in Fig. 2, they are cut away upon a straight line, as 3 3, Fig. l, and the line of cut makes a chord to the circular mold-chamber. The body part of the mold is shown thus cut in Fig. 3, and it will be seen that a part of each chamber or groove is exposed, thereby leaving a substantially oval opening through which the molten metal can run to enter the crown-mold space to be described.

By the improved mold herein described I may cast a ring with a crown of any desired shape or character, and I may do this by employing a third or crown section, the same being denoted by C. (See Fig. 4.) The inner side of this crown-section C is cut or dressed flat, as shown in Fig. 5, that it may fit against the corres pondingly-flattened faces b of the main portion of the mold left by cutting said section in the line 3 3. The crownmold section C can be held to the body portion of the mold by any suitable means, I obtaining highly-satisfactory results by holding it in place by glue or any suitable cement. The crown-mold section C has formed in its fiat face a depression o1' concavity, as 18, represented as substantially oval in outline, said cavity having at its center a projection 22, (see Figs. 4 and 5,) which defines the opening in the crownA to receive the jewel; but said concavity may be variously modified in shape and yet be Within the'scope of my invention, and themolten metal runs into the mold-space and enters and fills the concavity 18, the part of the ring which is form ed in said concavity constituting the crown or the part to receive the jewel.

The opening presented in the registered mold-sections M and M by making the cut on the line 3 is denoted by 19, and it is of the same shape as the concavity 18, they registering during casting. A plurality of separated and comparatively narrow holes, as 20, are made in the concavity 18, said holes sloping slightly toward the center of the crown. These holes are adapted to receive the metal that is to form the prongs 25 of a ring of the kind shown in Fig. 7. The two main moldsections being pinned together, as shown in Fig. 3, the crown-section C will be fitted against the fiat outer faces b thereof and glued or otherwise secured in place. The molten metal will be then poured through the opening and will enter the registered grooves l2 and 12', constituting the mold-space, and surround the core-sections 13 and 13', and will flow thence into the concavity 18 and sockets 2.0, forming a cast ring of the shape shownin Fig. 7.

In Fig. 6 I show a slightly-different type of crown-mold section C', it being shaped to produce the ring shown in Fig. 8, the enlargement of the ring having a hole 26 fora jewel. The crown-mold C has an annular groove or channel, as 18', adapted to register with the body-mold space. The groove 18' is inwardly tapered and in its formation produces a core 22. The metal fills the mold-space and runs into the annular groove I8', and when it is cold the parts of the mold can be separated and the ring detached. As the core 22 cannot be removed with the ring, it is simply broken off and afterward removed from the jewel seat or recess 26.

From the foregoing it will be evident that the core or projection 22 defines the size and shape of the jewel seat or recess.

The invention may be considerably moditied within the scope of the following claims.

Having described my invention, what I l.. A mold comprising a plurality of body-V secti'ons disposed face to face and each having a parti-annular chamber, said chambers registering to form a body-mold space,each chamber being cut away on a line making a chord to said parti-annular chamber,to thereby expose a part of each chamber, a core in said chamber, the face of the core constituting one wall of said chamber to thereby dene the internal diameter of the ring, and a crown-mold section having a crown-mold space in communication with the body-mold space, said crown-mold section abutting the face of the body-section left by the cut as a chord and forming that portion of the other wall of the annular chamber which lies between the points where the chord cuts said annular chamber.

2. A mold comprising a plurality of bodysections disposed face to face and each having aparti-annular chamber of variable depths, said chambers registering to form a body-mold space, each chamber being eut away on a line making a chord to said annular chamber to thereby expose a part of each chamber, a core in said chamber, the face of the core constituting one wall of said chamber to thereby deiine the internal diameter of the ring, and a crown-mold section having a crown-mold space in communication with the body-mold space, said crown-mold section abutting the face of the body-section left by the cut as a chord and forming that portion of the other wall of the annular chamber which lies between the points where the chord cuts said annular chamber.

3. A mold comprising a plurality of bodysections disposed face to face and having parti-circular chambers registering to form a body-mold space,said sections being cut away on aline making a chord to the circle, to thereby expose part of the mold-space, a pin to unite the two sections, a core to define the internal diameter of the ring, and a crown-mold section having a flat face to fit against the IOO IIO

body-sections of the mold, and having a moldspace in communication with the bodymold space.

el. A multipart mold consisting of two main separable substantially duplicate sections having like parti-annular chambers adapted to register one with the other, and a runway, said chambers being eut away on a l-ine making a Chord to said circular chambers to thereby expose a part of each chamber, a eore centered in said eharnber,and a third or auxiliary moldseetion adapted to fit against the face of the mold material left by the cut made as a chord, said auxiliary mold-section having a projection surrounded by a space, said space coinmunioating with the mold-space of each main section and defining the exterior shape of the crown of the ring to be cast, the said projection defining the size and location of thejewelspace in the crown, said auxiliary section being confined to the main section during Casting.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM H. FORD.

Witnesses:

GEO. W. GREGORY, CYEUS W. RUSSELL. 

